You must set up the sysprep files before you can customize Windows 2003, Windows 2000, and Windows XP sources. The sysprep files must be saved to %ALLUSERSPROFILE%\Application Data\VMware\VMware vCenter Converter Standalone on the machine where the Converter Standalone server runs. For more details on sysprep location for different operating systems, see Save Sysprep Files.
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2 In the Advanced conversion options pane, select Configure guest preferences for the virtual machine and click Next to view and adjust the available customization options.